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dell-laptop: If there is no hwswitch, then clear all hw-controlled bits

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To ensure we don't enter any hw-switch related code paths on machines without
a hw-switch.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
This commit is contained in:
Hans de Goede 2013-11-17 14:00:18 +01:00 committed by Matthew Garrett
parent 2a92551845
commit ddde708217
1 changed files with 3 additions and 0 deletions
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3
drivers/platform/x86/dell-laptop.c
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@ -548,6 +548,9 @@ static int __init dell_setup_rfkill(void)
buffer->input[0] = 0x2;
dell_send_request(buffer, 17, 11);
hwswitch_state = buffer->output[1];
/* If there is no hwswitch, then clear all hw-controlled bits */
if (!(status & BIT(0)))
hwswitch_state &= ~7;
release_buffer();
if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {